Light gun: The worker won't feel tired after long works. Lazy gun: The worker does not need to clean the guns with solvent after use. 30 days later when the worker unlocks the needle, the gun works ...

Light gun: The worker won't feel tired after long works. Lazy gun: The worker does not need to clean the guns with solvent after use. 30 days later when the worker unlocks the needle, the gun works ...